A Westchester couple with one-in-a-million identical baby triplets may soon face even longer odds – trying to tell the little guys apart when they wear matching overalls over the holidays.

“If we dress them the same, then I would have to be creative and use different color bibs,” admitted Kerry Lyons, 37, who gave birth to Kevin, Declan and Cormac on Oct. 10.

Kerry and husband Desmond Lyons still can’t tell one tiny tyke from another and came up with a color-coded system.

“They say a mother knows her own child,” Kerry said. “Right now, I know the three of them, but I don’t know the three of them apart unless I use my little tricks.”

“We try to have Kevin always wearing a little red, Declan always wears primarily blue and Cormac always has a little green,” she said during a chat by phone the other day from the family’s Irvington home.

“Just to make sure they don’t get mixed up at bathtime, Cormac has green nail polish on his big toe and Declan has blue polish on his big toe. Kevin is the one who was spared the nail polish,” their mom said.

“Just a dot of nail polish. Let’s not get carried away,” said Desmond, 41, a lawyer.

“We are the luckiest people on earth,” Kerry said about having the boys “arrive here safely” and healthy after a “very high-risk pregnancy” to join brother Liam, who turns 4 Saturday, and sister Ciara, 2.

Liam and Ciara know their colors – and always can tell which sibling they’re talking to.

“Liam will come up and say, ‘Hi, little brother, hello, Kevin, I love you,” said Kerry.

Like most families these days, the Lyonses are concerned about the economy.

“It’s definitely a tough time to bring three new little people into the world,” she said. “I’m worried about saving for college, how we’ll be able to afford a bigger house.”

But yesterday was for counting your blessings, and Kerry Lyons gave thanks her dreams came true.

“All my prayers were for a healthy, happy family and for a happy, healthy marriage, and I’m grateful to say I have both.”